Inderjit Forgings is a one of the finest exporter and seller of 904L Stainless Steel Threaded Fittings, which is not readily cold workable. Like other common austenitic stainless steels, Stainless Steel 904L Threaded Elbow Fittings is subject to corrosion cracking in chloride environments above 60 Degree C. Fabrication of Stainless Steel 904L Threaded Tee Fittings should be done only with tools dedicated to stainless steel materials. If this is not the case, rusting in Stainless Steel 904L Threaded Cross Fittings will occur as with other types of non stainless steel. Continuous use in 425 Degree C – 860 Degree C range not usually recommended due to carbide precipitation, Stainless Steel 904L Threaded Cap Fittings usually does not have low carbon content so is susceptible to sensitization.
Stainless Steel 904L Threaded Coupling Fittings have a eutectoid point of at least 727 Degree C (1,341 Degree F). The cold formability of Stainless Steel 904L Threaded Union Fittings is adversely impacted by the high sulfur content. Stainless Steel 904L Threaded Plug Fittings offers good oxidation resistance at temperatures up to 1700 Degree F (927 Degree C). As well as reducing the corrosion resistance, the sulfur additions in Stainless Steel 904L Threaded Bushing Fittings also result in poor weldability and reduced formability. Tooling and work surfaces in Stainless Steel 904L Threaded Nipple Fittings must be thoroughly cleaned before use. Some cold working in Stainless Steel 904L Threaded Half Coupling Fittings is possible but sharp bending should not be attempted.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | KS | AFNOR | EN |
| SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
Specification : ASTM A182 / ASME SA182
Dimension Standard : ASME/ANSI B16.11, MSS SP-79, 83, 95, 97, BS 3799
Size : 1/8” NB to 4” NB (Screwed)
Pressure Class : 2000 LBS, 3000 LBS, 6000 LBS
| ASTM A182 F904L Stainless Steel Threaded Fittings – Manufacturing Standards | |
|---|---|
| ASTM A182 - ASME SA182 | Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings |
| ASME B16.11 | Forged Fittings, Socket – Welding and Threaded |
| MSS SP-95 | Swage(d) Nipples and Bull Plugs |
| BS3799 | Specification for Steel pipe fittings, screwed and Socket-welding for the petroleum industry |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
| SS 904L | 0.020 max | 2.00 max | 1.00 max | 0.040 max | 0.030 max | 19.00 – 23.00 | 4.00 – 5.00 max | 23.00 – 28.00 | 1.00 – 2.00 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.95 g/cm3 | 1350 °C (2460 °F) | Psi – 71000 , MPa – 490 | Psi – 32000 , MPa – 220 | 35 % |
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